waves

Question 1

Frequency & wavelength

Answer 1

Low frequency = long wavelength
High frequency = short wavelength

Question 2

Frequency

Answer 2

Number of crests/wavelengths that pass a point in a certain time frame (usually 1 sec)

Question 3

Sound is a __ wave

Answer 3

Longitudinal

Question 4

Mechanical wave

Answer 4

Needs a medium to travel through; can be liquid, solid, or gas (water, sound, seismic)

Question 5

Electromagnetic wave

Answer 5

Transfer energy through a field & don’t need a medium to travel through (like light, radio, UV, and x-ray)

Question 6

Parts of a transverse wave

Answer 6

Crest, trough, rest

Question 7

Parts of a longitudinal wave

Answer 7

Rarefaction, compression

Question 8

Wave speed formula

Answer 8

Wave velocity (m/s) = frequency (Hz) * wavelength (m)

Question 9

4 types of waves

Answer 9

Sound, water, light, radio

Question 10

Lowest to highest energy on EM spectrum

Answer 10

Radio, microwave, infrared, visible, ultraviolet, x-ray, gamma

Question 11

Blueshift

Answer 11

Moving toward you

Question 12

Redshift

Answer 12

Moving away from you

Question 13

3 types of spectra

Answer 13

Continuous: complete band of colors; every wavelength is emitted (none is absorbed)
Emission: unevenly spaced lines of colors that represent which wavelengths are emitted
Absorption: Continuous spectrum w/ dark lines that represent which wavelengths are absorbed

Question 14

Doppler effect

Answer 14

When a source is moving towards you, the frequency sounds higher than when the same source is moving away from you.